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The interdendritic-melt solidification control (IMSC) and its effects on the porosity and phase change of a Ni-based superalloy

DOI: 10.1016/j.scriptamat.2013.11.001 DOI Help

Authors: Liang Zheng (University of Hull) , Guoqing Zhang (Beijing Institute of Aeronautical Materials) , Chengbo Xiao (Beijing Institute of Aeronautical Materials) , T.l. Lee (University of Hull) , Bo Han (Beijing Institute of Aeronautical Materials) , Zhou Li (Beijing Institute of Aeronautical Materials) , Dominik Daisenberger (Diamond Light Source) , Jiawei Mi (University of Hull)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scripta Materialia

State: Published (Approved)
Published: November 2013

Abstract: A novel interdendritic-melt solidification control (IMSC) technique is developed to manufacture equiaxed Ni-based superalloy with much reduced porosity. The basic concept of IMSC is illustrated. The effects of IMSC on the porosity and phases of IN792 alloy are investigated using quantitative metallography and synchrotron X-ray diffraction. Compared to conventional investment casting, IMSC can produce castings with no shrinkage porosity, much less microporosity and larger dendritic arm spacing, slightly larger sized eutectic (γ + γ′) and MC carbides, and has no significant effects on the relative amount of phases

Journal Keywords: Superalloy; Porosity; Synchrotron XRD; Casting; Isothermal solidification followed by quenching (ISQ)

Subject Areas: Engineering

Instruments: I15-Extreme Conditions